Apparatus for crinkling paper



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APPARATUS FOR CRINKLING PAPER Filed August 20. 1924 3 Sheets-Sheet 1 A ril 27 1926. 1,582,843

W. A LORENZ APPARATUS FOR CRINKLING PAPER Filed August 20, 1924 3 Sheets-Sheet 2 Illllliiiifillllilllllilllll" illllillllllllll fnvenzm W. A. LORENZ APPARATUS FOR CRINKLING PAPER April 27 1926.

Filed August 20 1924 3 Sheets-Sheet :5

. Invenof I Patented Apr. 27, 1926. Y

UNITED STATES PATENT OF IC WILLIAM A. LORENZ, or HARTFORD, commo'rroucr, nssIenoR- TO THE 0mm FABRIC COMPANY, or HARTFORD, commcrrcur, A CORPORATION or connnc'rrou'r.

' APPARATUS FOR CRINKL ING PAPER.

Application filed August 20, 1924 SeriaII1To. 733,207.

7 '0 all whom it may concern:

Be it known that I, WILLIAM A. LORENZ, a citizen of United States, residing at'Hartford, in the county of Hartford and State of Connecticut, have invented new and useful Improvements in Apparatus for Crinkling Paper,-of which the following is a specification.

This invention relates to apparatus for producing paper which is elastic in all directions.

The aim of the invention is to provide apparatus which is simple in construction and rapid in action and applicable to a papermaking machine without obstructingits operation. This is accomplished by, passing wet paper between circumferentially corrugated cylinders and crinkling it against a doctor blade of special construction.

Another object of the invention is to provide means .for adjusting and shaping the doctor blade, and positioning it in relation to the corrugated cylinders, in order to produce varying degrees of creping in the paper fabric.

Other objects will be in part obvious and in part pointed out more in detail hereinafter.

In the accompanying drawings, wherein I have shown, for illustrative purposes, one embodiment which the present invention may take,-

Figure 1 is a plan view of the apparatus. Fig. 2 is a sectional -view on the line 22 of Fig. 1. Fig. 3 is a front elevation looking in the direction of 3-3 of Fig. 2. Fig. 4 is an enlarged View of a portlon of the doctor blade and associated corrugated cylinder. Fig. 5 is a sectional view on the line 5-5 of Fig. 4. Fig. 6 is an enlarged view of a modified form of doctor blade with a part of it associated with the corrugating roll. Fig. 7 is a sectional view on the line 77 of Fig. 6. Fig. 8 shows a modified form of the corrugating cylinder and doctor blade, that produces a design in the creped paper. Fig. 9 shows'a modified form of doctor blade.

Referring to the drawings in detail, the frame of the machine may be of any suit able shape or form, but is here shown as having the two side uprights 10 and 11 placed upon the base 12. In carrying out the present invention either finished paper thatis wetted', or a wet web of pulp, as it is delivered from a web forming machine. may be operated upon, the latter being shown in the drawings. In the present illustrative disclosure, I have shown byway of exemplification only, the wet paper web 15 as being supplied from a aper makingnachine and carried by a lilapket 13in the direction of the arrow. 14. The paper Web 15 thenpasses upon \the main corrugating cylinder 16, having circumferential corru gations, forming grooves 17 and ribs '18.

' The wet paper-is forced into the grooves by means of a corrugated pressing roll 20. This roll is supported upon a shaft 21, runmug in arms 22, 22, which are pivoted on studs 23, 23, on the frame of the machine.

This roll may be pressed against the paper l upon the cylinder 16 by means of springs, or by means of weights 24, held upon arms 25, 25. In order to adjust the roll 20 to or from the cylinder 16, stop screws 26- may be employed.

The paper 15 passing around the cylinder 16 is then carried downwardly between the cylinder 16 and the corrugating roll 28. This roll is supported upon a shaft 29, in

arms 30, 30, supported upon studs 31, 31,

fastened to the frame of the machine. The

roll 28 may be pressed against the cylinder by suitable springsor by counterweights 32,

32, on extensions 33, 33. By moving this weight forward or backward, the desired degree of pressure is maintained against thepaper on the cylinder 16. Stop screws 34 may be used to adjust ribs of the roll 28 around the cylinder 16 until it strikes the doctor blade 36. This doctor blade is shown in Figs. 3, 4 and 5, and is provided on part of its face with grooves 37 and with ribs 38.

The doctor blade 36.is supported by trunnions 40,40, in arms 41,41. These arms are supported upon bearings 45, 45, so as to adjust the doctor blade 36 circumferentially around the cylinder 16 when it ma be clamped to position by means of 0 amp screws 42, 42. The trunnions 40 extend beyond the arms 41, and there is an indicator 43 securedto the trunnion. This indicator gating roll 16. y This indicator may be set to the graduated portion 44 of the arm 41.

In this manner the angular adjustment of paper is carried around roll 28 instead of around the bottom of cylinder 16. When carried around roll 28 it is stripped off by the blade 46 and falls on a belt 49 placed below.

The creped paper 48 will drop upon the traveling belt 49 running in the arrowed direction shown. This belt may be driven at any desired speed, either at the same rate as the creped paper travels, or at a greater rate, in order to pull out the creping and thus lessen its stretchability.

The creped paper 50 may be dried when passing .around the heated driers, not shown, of the paper-making machine.

Figs. 6 and 7 show a modified form of doc tor blade, in which the front face 52 of the doctor blade 53, is curved; this face is shown as convex, but it may be made concave, or be beveled. The ribs are rounded on their edges. This blade 53 is supported on trunnions 56.

Fig. 8 shows a modification of the grooved and ribbed cylinder 58, having narrow grooves 59, 59 and ribs 60, 60, and having also wide ribs 61, 61. The doctor blade 62 is modified to suit, by providing wide grooves 63, 63 to match the wide ribs 61, 61 of the cylinder 58. This plan provides means for producing designs in the paper, which may be varied ad libitum.

A modified form of doctor blade is shown in Fig. 9 in which the blade 65 is provided with projections extending into the grooves of the cylinder 16. The paper is shown at .15; the bottom of the paper 15 may hug the bottom of the grooves closely, in which case it may bend as at 68. To prevent the aper at 68 from catching the oints of the octor blade. they are rounde or beveled, as at 66, Fig. 9; in that case the paper cannot catch but will be crinkled as at'67.

Asmany changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it. is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a. limiting sense.

It is, also understood'that' the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.'

I claim as my invention:

1. Apparatus for forming the herein described elastic paper comprising means for corrugating the paper longitudinall and means for creping the paper against a grooved and rib-faced doctor blade.

2. An apparatus for forming the herein described elastic paper comprising a. pair of. circumferentially grooved cylinders in meshing relation, and means for driving the cylinders, in combination with a doctor blade grooved on its face, the points of the ribs projecting into the grooves of the cylinder.

3. A circumferentially' grooved cylinder in combination with a circumferentially corrugated roll meshing therewith, and a scraper having teeth extendin into the grooves of said member, the sur ace of said scraper being provided with ribs; means for advancing the circumferentially grooved cylinder and means for adjusting the face of the scraper in relation to the surface of the cylinder, and fixing the angle of the scraper to a definite mark.

4. In a' machine for creping paper, the combination of a pair of circumferentially grooved cylinders, with a doctor blade havmg projections that enter the grooves in the cylinders, the face of the intermediate ribs of the doctor blade being curved.

Signed at Hartford, Connecticut, this 15th day of August, 1924.

WILLIAM A. LORENZ. 

